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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 21, No. 35 >


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Title: 層流ファンの理論揚程と諸圧力損失
Other Titles: Theoretical Pressure Head and PreSsure Head Losses of a Laminar Flow Fan
Authors: 児玉, 好雄 / 葉山, 賢司 / 林, 秀千人 / 田中, 清裕 / 河部, 秀彦
Authors (alternative): Kodama, Yoshio / Hayama, Kenji / Hayashi, Hidechito / Tanaka, Kiyohiro / Kawabe, Hidehiko
Issue Date: Jul-1990
Publisher: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
Citation: 長崎大学工学部研究報告, 21(35), pp.21-28; 1990
Abstract: Theoretical pressure head was derived to a laminar flow fan. And the head losses, due to a flow friction and the losses in the rotor inlet and of the divergent flow at the rotor outlet, were predicted theoreticaly. The calculation with these theories shows that the optimum parameters exist to this type fan. The theoretical pressure head goes down when a radius ratio (ri/ro) is greater than 0.8 or a distance between two disks δD is large, and the degree of the going down is so much at flow coefficient less than 0.05. The pressure head losses is consisted mostly of the losses due to a flow friction at δD less than 1.0 mm, but mostly of the losses out of the rotor outlet at δD greater than 1.0 mm. The losses in the rotor inlet isn't so great at any conditions. That is, the minimum head losses is obtained at δD = 0.8 mm.
URI: http://hdl.handle.net/10069/24318
ISSN: 02860902
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 21, No. 35

Citable URI : http://hdl.handle.net/10069/24318

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